<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-bind指令</title>
    <style>
        .active {
            border: 1px solid red;
        }
    </style>
</head>

<body>

    <div id="app">
        <img v-bind:src="imgSrc" alt="图片">
        <br>
        <img :src="imgSrc" :title="imgTitle+'!!!!'" :class="isActive?'active':''" @click="toggleActive"></img>
        <br>
        <img :src="imgSrc" :title="imgTitle" :class="{active:isActive}" @click="toggleActive"></img>
    </div>

    <!-- 开发环境版本 -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el: "#app",
            data: {
                imgSrc: "img/OIP.jpg",
                imgTitle: "这是一个测试图片",
                isActive: false
            },
            methods: {
                toggleActive: function () {
                    this.isActive = !this.isActive;
                }
            }

        })
    </script>
</body>

</html>